docs: def parse_market(self, market, split_char='_'):
          """
          In comes the market identifier directly from the service. Returned is
          the crypto and fiat identifier in moneywagon format.
          """
          crypto, fiat = market.lower().split(split_char)
          return (
              self.fix_symbol(crypto, reverse=True),
              self.fix_symbol(fiat, reverse=True)
          )